Good evening Danny,
Let me first thank you for your service to our country and willingness to serve during those times of great tribulation.
Interestingly, after you told us of your practice run over Talacre, I remembered a 20mm canon cartridge case that I dug out of the beach just west of the lighthouse at Talacre and I did a quck check of the head stamp. Turned out that it was stammped with the British war arrow, 1941, and 20mm.
Not one of yours, I suppose. Unless you missed the dunes!
